body{
	background-image:url("bg.jpg");
	font-size:20px;
}

.chapitre{
	background-color:white;
	border-radius:10px;
	border:3px solid;
	padding:10px 0px 10px 0px;
}

form{
	text-align:center;
	border-radius:10px;
	background-color:rgba(255, 255, 255, .5);
}

h1{
	position:relative;
	left:50%;
	transform: translate(-50%, 0%);
	text-align:center;
	color:red;
	font-size:50px;
	background-color:white;
	border:3px solid;
	width:400px;
}

#bouton{
	margin-top:30px;
	width:150px;
	height:50px;
	font-size:20px;
	margin:40px;
}

.duree_questions{
	position:relative;
	left:50%;
	transform: translate(-50%, 0%);
	background-color:white;
	width:300px;
	border-radius:10px;
	border:3px solid;
	padding:0px 10px 0px 10px;
}